fellow republican jon huntsman was literally running for the white house. in atlanta participants in the peach tree road race were trying to survive ten kilometers. an endurance test. nothing like nathan's hotdog eating contest on coney island. at d/fw airport in dallas american warriors got a hearty welcome home. and in afghanistan a group of american soldiers took this day to re-enlist. general david petraeus is about to become the next cia director and was there to say good-bye and thanks. >> and america can never thank you enough. >> reporter: america's 235th birthday. a day to stand up and be proud. even if you're sitting down. brian mooar, nbc news, washington. >>> fox news is apologizing tonight for tweets saying president obama had been assassinated. the fox news politics account tweeted six reports that president obama had been shot and killed in iowa. but it was all a hoax. hackers broke into the account early this morning and sent out those tweets. fox news called them malicious and false, adding that it will work with twitter to figure out how t